Sigma Electrical ServicesLogo Design Contest Logo Design Contest Contests / Sigma Electrical Services Sigma Electrical Services has selected their winning logo design. For $575 they received 281 designs from 50 different designers from around the world. Find out how LogoTournament works How LogoTournament works Contest Entries by denzu Return to Contest Return to Contest Withdrawn New #15 Withdrawn New #16 Withdrawn Prefers others. #20 Withdrawn Prefers others. #18 Withdrawn Prefers others. #17 Discussion No comments yet.